THERE were fireworks over who got to see the July 4 fireworks on the roof of London Terrace Towers in Chelsea. “Residents were told they needed to be on a list, and Tim Gunn, Debbie Harry and Bill Hader of ‘SNL’ all didn’t make the cut,” an insider told us. A building rep said access to the roof, which holds 470, “was first-come, first-serve and the list filled up very fast.”